Keep Bananas Ripe
If you want to keep bananas fresh for longer, get some plastic wrap. Separate your bananas and cover each stem with plastic wrap. The bananas will still ripen, but they will stay fresh for longer. And one rotten banana won’t infect the rest.
There’s a biological reason for why this works. As bananas ripen, they release ethylene gas through the stem. By covering the stem with plastic wrap, you prevent the gas from affecting the rest of the banana.